Heya Jao,
We are able to transmit data >1Gbps using just a single connection between clients which maxes out the physical hardware. We found that for specific high performance operations opening multiple connections actually increased contention and reduced maximum throughput. Having a single connection as such was therefore a performance optimisation not a limitation. If you could describe the scenario you require we will be happy to consider it. For the use case of requiring data priority we also have https://networkcomms.net/api/html/P_NetworkCommsDotNet_SendReceiveOptions_ReceiveHandlePriority.htm.
Kind regards,
Marc